firefly-linux-kernel-4.4.55.git
13 years agoMerge branch 'hw-breakpoint' of git://repo.or.cz/linux-2.6/linux-wd into devel-stable
Russell King [Sat, 18 Dec 2010 14:27:55 +0000 (14:27 +0000)]
Merge branch 'hw-breakpoint' of git://repo.or.cz/linux-2.6/linux-wd into devel-stable

13 years agoARM: hw_breakpoint: do not fail initcall if monitor mode is disabled
Will Deacon [Wed, 1 Dec 2010 17:37:45 +0000 (17:37 +0000)]
ARM: hw_breakpoint: do not fail initcall if monitor mode is disabled

The debug registers can only be manipulated from software if monitor
debug mode is enabled. On some cores, this can never be enabled (i.e.
the corresponding bit in the DSCR is RAZ/WI).

This patch ensures we can handle this hardware configuration and fail
gracefully, rather than blow up the kernel during boot.

Reported-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: hw_breakpoint: fix warnings generated by sparse
Will Deacon [Mon, 29 Nov 2010 17:06:53 +0000 (17:06 +0000)]
ARM: hw_breakpoint: fix warnings generated by sparse

sparse doesn't like per-cpu accesses such as:

static DEFINE_PER_CPU(struct perf_event *, foo[MAXLEN]);
struct perf_event **bar = __get_cpu_var(foo);

and shouts quite loudly about it:

| warning: incorrect type in assignment (different modifiers)
|    expected struct perf_event **slots
|    got struct perf_event *[noderef] *<noident>

This patch adds casts to these sorts of assignments in hw_breakpoint.c
in order to silence the warnings.

Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: ptrace: fix style issue with hw_breakpoint interface
Will Deacon [Thu, 25 Nov 2010 12:59:31 +0000 (12:59 +0000)]
ARM: ptrace: fix style issue with hw_breakpoint interface

This patch fixes a trivial style issue in ptrace.c.

Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: hw_breakpoint: disallow per-cpu breakpoints without overflow handler
Will Deacon [Wed, 1 Dec 2010 17:05:24 +0000 (17:05 +0000)]
ARM: hw_breakpoint: disallow per-cpu breakpoints without overflow handler

Single-stepping a breakpoint requires us to disable it temporarily so that
we don't get stuck in a recursive debug trap. With per-cpu breakpoints this
presents a problem where an interrupt can be taken before the single-step has
completed and a new task is eventually scheduled. This new task will not
hit the breakpoint because it will have been disabled during the previous
handling code.

This patch disallows per-cpu breakpoints on ARM when an overflow handler
is not present. A similar effect can be created by placing breakpoints on
a shell and then running applications there.

Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: hw_breakpoint: unify single-stepping code for watchpoints and breakpoints
Will Deacon [Wed, 1 Dec 2010 14:12:13 +0000 (14:12 +0000)]
ARM: hw_breakpoint: unify single-stepping code for watchpoints and breakpoints

The single-stepping code is currently different depending on whether
we are stepping over a breakpoint or a watchpoint. There is no good
reason for this, so let's sort it out.

This patch adds functions for enabling/disabling single-step for
a particular hw_breakpoint and integrates this with the exception
handling code.

Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: hw_breakpoint: do not allocate new breakpoints with preemption disabled
Will Deacon [Mon, 29 Nov 2010 16:56:01 +0000 (16:56 +0000)]
ARM: hw_breakpoint: do not allocate new breakpoints with preemption disabled

The watchpoint single-stepping code calls register_user_hw_breakpoint to
register a mismatch breakpoint for stepping over the watchpoint. This is
performed with preemption disabled, which is unsafe as we may end up scheduling
whilst in_atomic(). Furthermore, using the perf API is rather overkill since
we are already in the hw-breakpoint backend and only require access to reserved
breakpoints anyway.

This patch reworks the watchpoint stepping code so that we don't require
another perf_event for the mismatch breakpoint. Instead, we hold a separate
arch_hw_breakpoint_ctrl struct inside the watchpoint which is used exclusively
for stepping. We can check whether or not stepping is enabled when installing
or uninstalling the watchpoint and operate on the breakpoint accordingly.

Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: hw_breakpoint: don't advertise reserved breakpoints
Will Deacon [Sun, 28 Nov 2010 15:09:36 +0000 (15:09 +0000)]
ARM: hw_breakpoint: don't advertise reserved breakpoints

To permit handling of watchpoint exceptions without signalling a
debugger, it is necessary to reserve breakpoint registers for in-kernel
use only.

This patch ensures that we record and subtract the number of reserved
breakpoints from the number of usable breakpoint registers that we
advertise to userspace via the ptrace API.

Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: hw_breakpoint: disable preemption during debug exception handling
Will Deacon [Sun, 28 Nov 2010 14:57:24 +0000 (14:57 +0000)]
ARM: hw_breakpoint: disable preemption during debug exception handling

On ARM, debug exceptions occur in the form of data or prefetch aborts.
One difference is that debug exceptions require access to per-cpu banked
registers and data structures which are not saved in the low-level exception
code. For kernels built with CONFIG_PREEMPT, there is an unlikely scenario
that the debug handler ends up running on a different CPU from the one
that originally signalled the event, resulting in random data being read
from the wrong registers.

This patch adds a debug_entry macro to the low-level exception handling
code which checks whether the taken exception is a debug exception. If
it is, the preempt count for the faulting process is incremented. After
the debug handler has finished, the count is decremented.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: hw_breakpoint: correct and simplify alignment fixup code
Will Deacon [Thu, 25 Nov 2010 12:01:54 +0000 (12:01 +0000)]
ARM: hw_breakpoint: correct and simplify alignment fixup code

The current hw_breakpoint code tries to fix up the alignment of
breakpoints so that we can make use of sparse byte-address-select
bits in the control register and give the illusion that we can
set breakpoints on unaligned addresses.

Although this works on v6 cores, v7 forbids this behaviour, instead
requiring breakpoints to be set on aligned addresses and have contiguous
byte-address-select ranges depending on the instruction set in use.
For ARM the only supported size is 4 bytes, whilst Thumb-2 also permits
2 byte breakpoints (watchpoints can be of 1, 2, 4 or 8 bytes long).

This patch simplifies the alignment fixup code so that we require
addresses to be aligned to the size of the corresponding breakpoint.
This allows us to handle the common case of breaking on a half-word
aligned Thumb-2 instruction and also allows us to set byte watchpoints
on arbitrary addresses.

Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: hw_breakpoint: reset control registers in hotplug path
Will Deacon [Wed, 24 Nov 2010 17:45:49 +0000 (17:45 +0000)]
ARM: hw_breakpoint: reset control registers in hotplug path

The ARMv7 debug architecture doesn't make any guarantees about the
contents of debug control registers following a debug logic reset.

This patch ensures that we reset the control registers when a cpu
comes ONLINE (for example, with hotplug) so that when we enable
monitor mode while inserting a breakpoint we won't exhibit random
behaviour.

Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: hw_breakpoint: ensure OS lock is clear before writing to debug registers
Will Deacon [Wed, 24 Nov 2010 16:51:17 +0000 (16:51 +0000)]
ARM: hw_breakpoint: ensure OS lock is clear before writing to debug registers

ARMv7 architects a system for saving and restoring the debug registers
across low-power modes. At the heart of this system is a lock register
which, when set, forbids writes to the debug registers. While locked,
writes to debug registers via the co-processor interface will result
in undefined instruction traps. Linux currently doesn't make use of
this feature because we update the debug registers on context switch
anyway, however the status of the lock is IMPLEMENTATION DEFINED on
reset.

This patch ensures that the lock is cleared during boot so that we
can write to the debug registers safely.

Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: 6521/1: perf: use raw_spinlock_t for pmu_lock
Will Deacon [Thu, 2 Dec 2010 17:01:49 +0000 (18:01 +0100)]
ARM: 6521/1: perf: use raw_spinlock_t for pmu_lock

For kernels built with PREEMPT_RT, critical sections protected
by standard spinlocks are preemptible. This is not acceptable
on perf as (a) we may be scheduled onto a different CPU whilst
reading/writing banked PMU registers and (b) the latency when
reading the PMU registers becomes unpredictable.

This patch upgrades the pmu_lock spinlock to a raw_spinlock
instead.

Reported-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoARM: 6512/1: perf: fix warnings generated by sparse
Will Deacon [Tue, 30 Nov 2010 17:15:53 +0000 (18:15 +0100)]
ARM: 6512/1: perf: fix warnings generated by sparse

Russell reported a number of warnings coming from sparse when
checking the ARM perf_event.c files:

| perf_event.c seems to also have problems too:
|
|   CHECK   arch/arm/kernel/perf_event.c
|   arch/arm/kernel/perf_event.c:37:1: warning: symbol 'pmu_lock' was not declared. Should it be static?
|   arch/arm/kernel/perf_event.c:70:1: warning: symbol 'cpu_hw_events' was not declared. Should it be static?
|   arch/arm/kernel/perf_event.c:1006:1: warning: symbol 'armv6pmu_enable_event' was not declared. Should it be static?
|   arch/arm/kernel/perf_event.c:1113:1: warning: symbol 'armv6pmu_stop' was not declared. Should it be static?
|   arch/arm/kernel/perf_event.c:1956:6: warning: symbol 'armv7pmu_enable_event' was not declared. Should it be static?
|   arch/arm/kernel/perf_event.c:3072:14: warning: incorrect type in argument 1 (different address spaces)
|   arch/arm/kernel/perf_event.c:3072:14:    expected void const volatile [noderef] <asn:1>*<noident>
|   arch/arm/kernel/perf_event.c:3072:14:    got struct frame_tail *tail
|   arch/arm/kernel/perf_event.c:3074:49: warning: incorrect type in argument 2 (different address spaces)
|   arch/arm/kernel/perf_event.c:3074:49:    expected void const [noderef] <asn:1>*from
|   arch/arm/kernel/perf_event.c:3074:49:    got struct frame_tail *tail

This patch resolves these issues so we can live in silence
again.

Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
13 years agoLinux 2.6.37-rc4
Linus Torvalds [Tue, 30 Nov 2010 04:42:04 +0000 (20:42 -0800)]
Linux 2.6.37-rc4

13 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Tue, 30 Nov 2010 04:41:39 +0000 (20:41 -0800)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Use call_rcu_sched() for pagetables

13 years agopowerpc: Use call_rcu_sched() for pagetables
Peter Zijlstra [Fri, 26 Nov 2010 14:38:45 +0000 (15:38 +0100)]
powerpc: Use call_rcu_sched() for pagetables

PowerPC relies on IRQ-disable to guard against RCU quiecent states,
use the appropriate RCU call version.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
13 years agoRevert "debug_locks: set oops_in_progress if we will log messages."
Dave Airlie [Mon, 29 Nov 2010 23:15:46 +0000 (09:15 +1000)]
Revert "debug_locks: set oops_in_progress if we will log messages."

This reverts commit e0fdace10e75dac67d906213b780ff1b1a4cc360.

On-list discussion seems to suggest that the robustness fixes for printk
make this unnecessary and DaveM has also agreed in person at Kernel Summit
and on list.

The main problem with this code is once we hit a lockdep splat we always
keep oops_in_progress set, the console layer uses oops_in_progress with KMS
to decide when it should be showing the oops and not showing X, so it causes
problems around suspend/resume time when a userspace resume can cause a console
switch away from X, only if oops_in_progress is set (which is what we want
if an oops actually is in progress, but not because we had a lockdep splat
2 days prior).

Cc: David S Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Mon, 29 Nov 2010 22:38:06 +0000 (14:38 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  tpm: Autodetect itpm devices

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Mon, 29 Nov 2010 22:36:33 +0000 (14:36 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
  af_unix: limit recursion level
  pch_gbe driver: The wrong of initializer entry
  pch_gbe dreiver: chang author
  ucc_geth: fix ucc halt problem in half duplex mode
  inet: Fix __inet_inherit_port() to correctly increment bsockets and num_owners
  ehea: Add some info messages and fix an issue
  hso: fix disable_net
  NET: wan/x25_asy, move lapb_unregister to x25_asy_close_tty
  cxgb4vf: fix setting unicast/multicast addresses ...
  net, ppp: Report correct error code if unit allocation failed
  DECnet: don't leak uninitialized stack byte
  au1000_eth: fix invalid address accessing the MAC enable register
  dccp: fix error in updating the GAR
  tcp: restrict net.ipv4.tcp_adv_win_scale (#20312)
  netns: Don't leak others' openreq-s in proc
  Net: ceph: Makefile: Remove unnessary code
  vhost/net: fix rcu check usage
  econet: fix CVE-2010-3848
  econet: fix CVE-2010-3850
  econet: disallow NULL remote addr for sendmsg(), fixes CVE-2010-3849
  ...

13 years agoMerge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 29 Nov 2010 22:36:07 +0000 (14:36 -0800)]
Merge branch 'omap-fixes-for-linus' of git://git./linux/kernel/git/tmlind/linux-omap-2.6

* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  OMAP2+: PM/serial: hold console semaphore while OMAP UARTs are disabled
  OMAP: UART: don't resume UARTs that are not enabled.

13 years agotpm: Autodetect itpm devices
Matthew Garrett [Thu, 21 Oct 2010 21:42:40 +0000 (17:42 -0400)]
tpm: Autodetect itpm devices

Some Lenovos have TPMs that require a quirk to function correctly. This can
be autodetected by checking whether the device has a _HID of INTC0102. This
is an invalid PNPid, and as such is discarded by the pnp layer - however
it's still present in the ACPI code, so we can pull it out that way. This
means that the quirk won't be automatically applied on non-ACPI systems,
but without ACPI we don't have any way to identify the chip anyway so I
don't think that's a great concern.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
Tested-by: Jiri Kosina <jkosina@suse.cz>
Tested-by: Andy Isaacson <adi@hexapodia.org>
Signed-off-by: James Morris <jmorris@namei.org>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
Linus Torvalds [Mon, 29 Nov 2010 22:11:08 +0000 (14:11 -0800)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (24 commits)
  Btrfs: don't use migrate page without CONFIG_MIGRATION
  Btrfs: deal with DIO bios that span more than one ordered extent
  Btrfs: setup blank root and fs_info for mount time
  Btrfs: fix fiemap
  Btrfs - fix race between btrfs_get_sb() and umount
  Btrfs: update inode ctime when using links
  Btrfs: make sure new inode size is ok in fallocate
  Btrfs: fix typo in fallocate to make it honor actual size
  Btrfs: avoid NULL pointer deref in try_release_extent_buffer
  Btrfs: make btrfs_add_nondir take parent inode as an argument
  Btrfs: hold i_mutex when calling btrfs_log_dentry_safe
  Btrfs: use dget_parent where we can UPDATED
  Btrfs: fix more ESTALE problems with NFS
  Btrfs: handle NFS lookups properly
  btrfs: make 1-bit signed fileds unsigned
  btrfs: Show device attr correctly for symlinks
  btrfs: Set file size correctly in file clone
  btrfs: Check if dest_offset is block-size aligned before cloning file
  Btrfs: handle the space_cache option properly
  btrfs: Fix early enospc because 'unused' calculated with wrong sign.
  ...

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
Linus Torvalds [Mon, 29 Nov 2010 22:10:44 +0000 (14:10 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/bp/bp

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC: Fix typos in Documentation/edac.txt
  EDAC, MCE: Fix edac_init_mce_inject error handling
  EDAC: Remove deprecated kbuild goal definitions

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes
Linus Torvalds [Mon, 29 Nov 2010 22:10:22 +0000 (14:10 -0800)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  GFS2: Userland expects quota limit/warn/usage in 512b blocks

13 years agoaf_unix: limit recursion level
Eric Dumazet [Thu, 25 Nov 2010 04:11:39 +0000 (04:11 +0000)]
af_unix: limit recursion level

Its easy to eat all kernel memory and trigger NMI watchdog, using an
exploit program that queues unix sockets on top of others.

lkml ref : http://lkml.org/lkml/2010/11/25/8

This mechanism is used in applications, one choice we have is to have a
recursion limit.

Other limits might be needed as well (if we queue other types of files),
since the passfd mechanism is currently limited by socket receive queue
sizes only.

Add a recursion_level to unix socket, allowing up to 4 levels.

Each time we send an unix socket through sendfd mechanism, we copy its
recursion level (plus one) to receiver. This recursion level is cleared
when socket receive queue is emptied.

Reported-by: Марк Коренберг <socketpair@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agopch_gbe driver: The wrong of initializer entry
Toshiharu Okada [Mon, 29 Nov 2010 06:18:07 +0000 (06:18 +0000)]
pch_gbe driver: The wrong of initializer entry

The wrong of initializer entry was modified.

Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Reported-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agopch_gbe dreiver: chang author
Toshiharu Okada [Sun, 21 Nov 2010 19:58:37 +0000 (19:58 +0000)]
pch_gbe dreiver: chang author

This driver's AUTHOR was changed to "Toshiharu Okada" from "Masayuki Ohtake".
I update the Kconfig, renamed "Topcliff" to "EG20T".

Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoBtrfs: don't use migrate page without CONFIG_MIGRATION
Chris Mason [Mon, 29 Nov 2010 14:49:11 +0000 (09:49 -0500)]
Btrfs: don't use migrate page without CONFIG_MIGRATION

Fixes compile error

Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoucc_geth: fix ucc halt problem in half duplex mode
Yang Li [Thu, 25 Nov 2010 23:29:58 +0000 (23:29 +0000)]
ucc_geth: fix ucc halt problem in half duplex mode

In commit 58933c64(ucc_geth: Fix the wrong the Rx/Tx FIFO size),
the UCC_GETH_UTFTT_INIT is set to 512 based on the recommendation
of the QE Reference Manual.  But that will sometimes cause tx halt
while working in half duplex mode.

According to errata draft QE_GENERAL-A003(High Tx Virtual FIFO
threshold size can cause UCC to halt), setting UTFTT less than
[(UTFS x (M - 8)/M) - 128] will prevent this from happening
(M is the minimum buffer size).

The patch changes UTFTT back to 256.

Signed-off-by: Li Yang <leoli@freescale.com>
Cc: Jean-Denis Boyer <jdboyer@media5corp.com>
Cc: Andreas Schmitz <Andreas.Schmitz@riedel.net>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoinet: Fix __inet_inherit_port() to correctly increment bsockets and num_owners
Nagendra Tomar [Fri, 26 Nov 2010 14:26:27 +0000 (14:26 +0000)]
inet: Fix __inet_inherit_port() to correctly increment bsockets and num_owners

inet sockets corresponding to passive connections are added to the bind hash
using ___inet_inherit_port(). These sockets are later removed from the bind
hash using __inet_put_port(). These two functions are not exactly symmetrical.
__inet_put_port() decrements hashinfo->bsockets and tb->num_owners, whereas
___inet_inherit_port() does not increment them. This results in both of these
going to -ve values.

This patch fixes this by calling inet_bind_hash() from ___inet_inherit_port(),
which does the right thing.

'bsockets' and 'num_owners' were introduced by commit a9d8f9110d7e953c
(inet: Allowing more than 64k connections and heavily optimize bind(0))

Signed-off-by: Nagendra Singh Tomar <tomer_iisc@yahoo.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoehea: Add some info messages and fix an issue
Breno Leitao [Fri, 26 Nov 2010 07:26:27 +0000 (07:26 +0000)]
ehea: Add some info messages and fix an issue

This patch adds some debug information about ehea not being able to
allocate enough spaces. Also it correctly updates the amount of available
skb.

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoBtrfs: deal with DIO bios that span more than one ordered extent
Chris Mason [Mon, 29 Nov 2010 00:56:33 +0000 (19:56 -0500)]
Btrfs: deal with DIO bios that span more than one ordered extent

The new DIO bio splitting code has problems when the bio
spans more than one ordered extent.  This will happen as the
generic DIO code merges our get_blocks calls together into
a bigger single bio.

This fixes things by walking forward in the ordered extent
code finding all the overlapping ordered extents and completing them
all at once.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoUn-inline get_pipe_info() helper function
Linus Torvalds [Mon, 29 Nov 2010 00:27:19 +0000 (16:27 -0800)]
Un-inline get_pipe_info() helper function

This avoids some include-file hell, and the function isn't really
important enough to be inlined anyway.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoExport 'get_pipe_info()' to other users
Linus Torvalds [Sun, 28 Nov 2010 22:09:57 +0000 (14:09 -0800)]
Export 'get_pipe_info()' to other users

And in particular, use it in 'pipe_fcntl()'.

The other pipe functions do not need to use the 'careful' version, since
they are only ever called for things that are already known to be pipes.

The normal read/write/ioctl functions are called through the file
operations structures, so if a file isn't a pipe, they'd never get
called.  But pipe_fcntl() is special, and called directly from the
generic fcntl code, and needs to use the same careful function that the
splice code is using.

Cc: Jens Axboe <jaxboe@fusionio.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoRename 'pipe_info()' to 'get_pipe_info()'
Linus Torvalds [Sun, 28 Nov 2010 21:56:09 +0000 (13:56 -0800)]
Rename 'pipe_info()' to 'get_pipe_info()'

.. and change it to take the 'file' pointer instead of an inode, since
that's what all users want anyway.

The renaming is preparatory to exporting it to other users.  The old
'pipe_info()' name was too generic and is already used elsewhere, so
before making the function public we need to use a more specific name.

Cc: Jens Axboe <jaxboe@fusionio.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 28 Nov 2010 20:25:02 +0000 (12:25 -0800)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf: Fix the software context switch counter
  perf, x86: Fixup Kconfig deps
  x86, perf, nmi: Disable perf if counters are not accessible
  perf: Fix inherit vs. context rotation bug

13 years agoMerge branch 'fwnet' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1...
Linus Torvalds [Sun, 28 Nov 2010 20:24:20 +0000 (12:24 -0800)]
Merge branch 'fwnet' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'fwnet' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: net: throttle TX queue before running out of tlabels
  firewire: net: replace lists by counters
  firewire: net: fix memory leaks
  firewire: net: count stats.tx_packets and stats.tx_bytes

13 years agohso: fix disable_net
Filip Aben [Thu, 25 Nov 2010 03:40:50 +0000 (03:40 +0000)]
hso: fix disable_net

The HSO driver incorrectly creates a serial device instead of a net
device when disable_net is set. It shouldn't create anything for the
network interface.

Signed-off-by: Filip Aben <f.aben@option.com>
Reported-by: Piotr Isajew <pki@ex.com.pl>
Reported-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoNET: wan/x25_asy, move lapb_unregister to x25_asy_close_tty
Jiri Slaby [Wed, 24 Nov 2010 13:54:54 +0000 (13:54 +0000)]
NET: wan/x25_asy, move lapb_unregister to x25_asy_close_tty

We register lapb when tty is created, but unregister it only when the
device is UP. So move the lapb_unregister to x25_asy_close_tty after
the device is down.

The old behaviour causes ldisc switching to fail each second attempt,
because we noted for us that the device is unused, so we use it the
second time, but labp layer still have it registered, so it fails
obviously.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: Sergey Lapin <slapin@ossfans.org>
Cc: Andrew Hendry <andrew.hendry@gmail.com>
Tested-by: Sergey Lapin <slapin@ossfans.org>
Tested-by: Mikhail Ulyanov <ulyanov.mikhail@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agocxgb4vf: fix setting unicast/multicast addresses ...
Casey Leedom [Wed, 24 Nov 2010 12:23:57 +0000 (12:23 +0000)]
cxgb4vf: fix setting unicast/multicast addresses ...

We were truncating the number of unicast and multicast MAC addresses
supported.  Additionally, we were incorrectly computing the MAC Address
hash (a "1 << N" where we needed a "1ULL << N").

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonet, ppp: Report correct error code if unit allocation failed
Cyrill Gorcunov [Tue, 23 Nov 2010 11:43:44 +0000 (11:43 +0000)]
net, ppp: Report correct error code if unit allocation failed

Allocating unit from ird might return several error codes
not only -EAGAIN, so it should not be changed and returned
precisely. Same time unit release procedure should be invoked
only if device is unregistering.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
CC: Paul Mackerras <paulus@samba.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoDECnet: don't leak uninitialized stack byte
Dan Rosenberg [Tue, 23 Nov 2010 11:02:13 +0000 (11:02 +0000)]
DECnet: don't leak uninitialized stack byte

A single uninitialized padding byte is leaked to userspace.

Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
CC: stable <stable@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoau1000_eth: fix invalid address accessing the MAC enable register
Wolfgang Grandegger [Tue, 23 Nov 2010 06:40:25 +0000 (06:40 +0000)]
au1000_eth: fix invalid address accessing the MAC enable register

"aup->enable" holds already the address pointing to the MAC enable
register. The bug was introduced by commit d0e7cb:

"au1000-eth: remove volatiles, switch to I/O accessors".

CC: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Wolfgang Grandegger <wg@denx.de>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agodccp: fix error in updating the GAR
Gerrit Renker [Tue, 23 Nov 2010 02:36:56 +0000 (02:36 +0000)]
dccp: fix error in updating the GAR

This fixes a bug in updating the Greatest Acknowledgment number Received (GAR):
the current implementation does not track the greatest received value -
lower values in the range AWL..AWH (RFC 4340, 7.5.1) erase higher ones.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge branch 'vhost-net' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
David S. Miller [Sun, 28 Nov 2010 19:27:44 +0000 (11:27 -0800)]
Merge branch 'vhost-net' of git://git./linux/kernel/git/mst/vhost

13 years agotcp: restrict net.ipv4.tcp_adv_win_scale (#20312)
Alexey Dobriyan [Mon, 22 Nov 2010 12:54:21 +0000 (12:54 +0000)]
tcp: restrict net.ipv4.tcp_adv_win_scale (#20312)

tcp_win_from_space() does the following:

      if (sysctl_tcp_adv_win_scale <= 0)
              return space >> (-sysctl_tcp_adv_win_scale);
      else
              return space - (space >> sysctl_tcp_adv_win_scale);

"space" is int.

As per C99 6.5.7 (3) shifting int for 32 or more bits is
undefined behaviour.

Indeed, if sysctl_tcp_adv_win_scale is exactly 32,
space >> 32 equals space and function returns 0.

Which means we busyloop in tcp_fixup_rcvbuf().

Restrict net.ipv4.tcp_adv_win_scale to [-31, 31].

Fix https://bugzilla.kernel.org/show_bug.cgi?id=20312

Steps to reproduce:

      echo 32 >/proc/sys/net/ipv4/tcp_adv_win_scale
      wget www.kernel.org
      [softlockup]

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agonetns: Don't leak others' openreq-s in proc
Pavel Emelyanov [Mon, 22 Nov 2010 03:26:12 +0000 (03:26 +0000)]
netns: Don't leak others' openreq-s in proc

The /proc/net/tcp leaks openreq sockets from other namespaces.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoNet: ceph: Makefile: Remove unnessary code
Tracey Dent [Sun, 21 Nov 2010 15:23:50 +0000 (15:23 +0000)]
Net: ceph: Makefile: Remove unnessary code

Remove the if and else conditional because the code is in mainline and there
is no need in it being there.

Signed-off-by: Tracey Dent <tdent48227@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Sat, 27 Nov 2010 20:42:15 +0000 (12:42 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (30 commits)
  ALSA: hda - Use ALC_INIT_DEFAULT for really default initialization
  ASoC: Fix resource reclaim for osk5912
  ASoC: tlv320aic3x - fix variable may be used uninitialized warning
  ASoC: davinci-vcif - fix a memory leak
  ASoC: phycore-ac97: fix resource leak
  ASoC: imx-ssi: fix resource leak
  ASoC: simone: fix resource leak in simone_init error path
  ASoC: sam9g20_wm8731: fix resource leak in at91sam9g20ek_init error path
  ASoC: snd-soc-afeb9260: remove unneeded platform_device_del in error path
  ASoC: pcm030-audio-fabric: fix resource leak in pcm030_fabric_init error path
  ASoC: efika-audio-fabric: fix resource leak in efika_fabric_init error path
  ASoC: Call snd_soc_unregister_dais instead of snd_soc_unregister_dai in sh4_soc_dai_remove
  ASoC: fix SND_PXA2XX_LIB Kconfig warning
  ALSA: hda - Fix ALC660-VD/ALC861-VD capture/playback mixers
  ALSA: HDA: Add an extra DAC for Realtek ALC887-VD
  ASoC: nuc900-ac97: fix a memory leak
  ASoC: Return proper error for omap3pandora_soc_init
  ASoC: wm8961 - clear WM8961_MCLKDIV bit for freq <= 16500000
  ASoC: wm8961 - clear WM8961_DACSLOPE bit for normal mode
  ALSA: hda - Fix Acer 7730G support
  ...

13 years agoBtrfs: setup blank root and fs_info for mount time
Josef Bacik [Fri, 19 Nov 2010 19:59:15 +0000 (14:59 -0500)]
Btrfs: setup blank root and fs_info for mount time

There is a problem with how we use sget, it searches through the list of supers
attached to the fs_type looking for a super with the same fs_devices as what
we're trying to mount.  This depends on sb->s_fs_info being filled, but we don't
fill that in until we get to btrfs_fill_super, so we could hit supers on the
fs_type super list that have a null s_fs_info.  In order to fix that we need to
go ahead and setup a blank root with a blank fs_info to hold fs_devices, that
way our test will work out right and then we can set s_fs_info in
btrfs_set_super, and then open_ctree will simply use our pre-allocated root and
fs_info when setting everything up.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs: fix fiemap
Josef Bacik [Tue, 23 Nov 2010 19:36:57 +0000 (19:36 +0000)]
Btrfs: fix fiemap

There are two big problems currently with FIEMAP

1) We return extents for holes.  This isn't supposed to happen, we just don't
return extents for holes and then userspace interprets the lack of an extent as
a hole.

2) We sometimes don't set FIEMAP_EXTENT_LAST properly.  This is because we wait
to see a EXTENT_FLAG_VACANCY flag on the em, but this won't happen if say we ask
fiemap to map up to the last extent in a file, and there is nothing but holes up
to the i_size.  To fix this we need to lookup the last extent in this file and
save the logical offset, so if we happen to try and map that extent we can be
sure to set FIEMAP_EXTENT_LAST.

With this patch we now pass xfstest 225, which we never have before.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs - fix race between btrfs_get_sb() and umount
Ian Kent [Mon, 22 Nov 2010 02:21:38 +0000 (02:21 +0000)]
Btrfs - fix race between btrfs_get_sb() and umount

When mounting a btrfs file system btrfs_test_super() may attempt to
use sb->s_fs_info, the btrfs root, of a super block that is going away
and that has had the btrfs root set to NULL in its ->put_super(). But
if the super block is going away it cannot be an existing super block
so we can return false in this case.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs: update inode ctime when using links
Josef Bacik [Tue, 23 Nov 2010 19:50:59 +0000 (19:50 +0000)]
Btrfs: update inode ctime when using links

Currently we fail xfstest 236 because we're not updating the inode ctime on
link.  This is a simple fix, and makes it so we pass 236 now.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs: make sure new inode size is ok in fallocate
Josef Bacik [Mon, 22 Nov 2010 18:55:39 +0000 (18:55 +0000)]
Btrfs: make sure new inode size is ok in fallocate

We have been failing xfstest 228 forever, because we don't check to make sure
the new inode size is acceptable as far as RLIMIT is concerned.  Just check to
make sure it's ok to create a inode with this new size and error out if not.
With this patch we now pass 228.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs: fix typo in fallocate to make it honor actual size
Josef Bacik [Mon, 22 Nov 2010 18:50:32 +0000 (18:50 +0000)]
Btrfs: fix typo in fallocate to make it honor actual size

There is a typo in __btrfs_prealloc_file_range() where we set the i_size to
actual_len/cur_offset, and then just set it to cur_offset again, and do the same
with btrfs_ordered_update_i_size().  This fixes it back to keeping i_size in a
local variable and then updating i_size properly.  Tested this with

xfs_io -F -f -c "falloc 0 1" -c "pwrite 0 1" foo

stat'ing foo gives us a size of 1 instead of 4096 like it was.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoMerge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
Linus Torvalds [Fri, 26 Nov 2010 22:30:30 +0000 (07:30 +0900)]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFS: Ensure we return the dirent->d_type when it is known
  NFS: Correct the array bound calculation in nfs_readdir_add_to_array
  NFS: Don't ignore errors from nfs_do_filldir()
  NFS: Fix the error handling in "uncached_readdir()"
  NFS: Fix a page leak in uncached_readdir()
  NFS: Fix a page leak in nfs_do_filldir()
  NFS: Assume eof if the server returns no readdir records
  NFS: Buffer overflow in ->decode_dirent() should not be fatal
  Pure nfs client performance using odirect.
  SUNRPC: Fix an infinite loop in call_refresh/call_refreshresult

13 years agoMerge branch 'linux-next' of git://git.infradead.org/ubi-2.6
Linus Torvalds [Fri, 26 Nov 2010 22:30:08 +0000 (07:30 +0900)]
Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6

* 'linux-next' of git://git.infradead.org/ubi-2.6:
  UBI: release locks in check_corruption

13 years agoMerge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 26 Nov 2010 22:29:20 +0000 (07:29 +0900)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  posix-cpu-timers: Rcu_read_lock/unlock protect find_task_by_vpid call

13 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 26 Nov 2010 22:28:47 +0000 (07:28 +0900)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  dmar, x86: Use function stubs when CONFIG_INTR_REMAP is disabled
  x86-64: Fix and clean up AMD Fam10 MMCONF enabling
  x86: UV: Address interrupt/IO port operation conflict
  x86: Use online node real index in calulate_tbl_offset()
  x86, asm: Fix binutils 2.15 build failure

13 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 26 Nov 2010 22:28:17 +0000 (07:28 +0900)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf symbols: Remove incorrect open-coded container_of()
  perf record: Handle restrictive permissions in /proc/{kallsyms,modules}
  x86/kprobes: Prevent kprobes to probe on save_args()
  irq_work: Drop cmpxchg() result
  perf: Fix owner-list vs exit
  x86, hw_nmi: Move backtrace_mask declaration under ARCH_HAS_NMI_WATCHDOG
  tracing: Fix recursive user stack trace
  perf,hw_breakpoint: Initialize hardware api earlier
  x86: Ignore trap bits on single step exceptions
  tracing: Force arch_local_irq_* notrace for paravirt
  tracing: Fix module use of trace_bprintk()

13 years agoMerge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 26 Nov 2010 22:27:54 +0000 (07:27 +0900)]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Fix idle balancing
  sched: Fix volanomark performance regression

13 years agoMerge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
Linus Torvalds [Fri, 26 Nov 2010 22:26:48 +0000 (07:26 +0900)]
Merge branch 'for-linus' of git://git390.marist.edu/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
  [S390] qdio: free indicator after reset is finished
  [S390] nmi: fix clock comparator revalidation

13 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Fri, 26 Nov 2010 22:17:50 +0000 (07:17 +0900)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  cciss: fix build for PROC_FS disabled
  block: fix amiga and atari floppy driver compile warning
  blk-throttle: Fix calculation of max number of WRITES to be dispatched
  ioprio: grab rcu_read_lock in sys_ioprio_{set,get}()
  xen/blkfront: cope with backend that fail empty BLKIF_OP_WRITE_BARRIER requests
  xen/blkfront: Implement FUA with BLKIF_OP_WRITE_BARRIER
  xen/blkfront: change blk_shadow.request to proper pointer
  xen/blkfront: map REQ_FLUSH into a full barrier

13 years agoMerge branch 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 26 Nov 2010 22:17:16 +0000 (07:17 +0900)]
Merge branch 'rmobile-fixes-for-linus' of git://git./linux/kernel/git/lethal/sh-2.6

* 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  ARM: mach-shmobile: clock-sh7372: remove bogus pllc2 clock toggling.
  ARM: mach-shmobile: clock-sh7372: remove unnecessary fsi clocks
  ARM: mach-shmobile: clock-sh7372: modify error code
  ARM: mach-shmobile: ap4evb: FSI clock use proper process for ak4642
  ARM: mach-shmobile: ap4evb: FSI clock use proper process for HDMI
  ARM: mach-shmobile: clock-sh7372: remove fsidiv bogus disable
  ARM: mach-shmobile: sh7372 USB0/IIC1 MSTP fix

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Linus Torvalds [Fri, 26 Nov 2010 22:16:29 +0000 (07:16 +0900)]
Merge branch 'for-linus' of git://git./linux/kernel/git/cjb/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
  mmc: sdhci: 8-bit bus width changes
  mmc: sdio: fix runtime PM anomalies by introducing MMC_CAP_POWER_OFF_CARD
  mmc: sdio: fix nasty oops in mmc_sdio_detect
  mmc: omap4: hsmmc: Fix improper card detection while booting
  mmc: fix rmmod race for hosts using card-detection polling
  mmc: sdhci: Fix crash on boot with C0 stepping Moorestown platforms
  mmc: sdhci-esdhc-imx: enable QUIRK_NO_MULTIBLOCK only for i.MX25 and i.MX35
  mmc: sdhci-esdhc-imx: fix timeout on i.MX's sdhci
  mmc: sdhci: Properly enable SDIO IRQ wakeups
  mmc: ushc: Return proper error code for ushc_probe()
  mmc: Fix printing of card DDR type

13 years agoMerge branch 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 26 Nov 2010 22:15:25 +0000 (07:15 +0900)]
Merge branch 's5p-fixes-for-linus' of git://git./linux/kernel/git/kgene/linux-samsung

* 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: S5PV210: Fix sysdev related warning messages
  ARM: S3C24XX: Fix UART3 submask on S3C2416 and S3C2443
  ARM: S3C24XX: Fix Demux error in UART3 irqs on S3C2443 and S3C2416
  ARM: S3C64XX: fix uart clock setup for mini6410/real6410
  ARM: S3C24XX: Fix wrong s3c_gpio_cfgpull
  ARM: S3C2410: Adapt h1940-bluetooth to gpiolib changes

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke...
Linus Torvalds [Fri, 26 Nov 2010 22:14:00 +0000 (07:14 +0900)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix typo in comment of nilfs_dat_move function
  nilfs2: nilfs_iget_for_gc() returns ERR_PTR

13 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Fri, 26 Nov 2010 16:17:42 +0000 (17:17 +0100)]
Merge branch 'fix/asoc' into for-linus

13 years agoALSA: hda - Use ALC_INIT_DEFAULT for really default initialization
Takashi Iwai [Fri, 26 Nov 2010 16:11:18 +0000 (17:11 +0100)]
ALSA: hda - Use ALC_INIT_DEFAULT for really default initialization

When SKU assid gives no valid bits for 0x38, the driver didn't take
any action, so far.  This resulted in the missing initialization for
external amps, etc, thus the silent output in the end.

Especially users hit this problem on ALC888 newly since 2.6.35,
where the driver doesn't force to use ALC_INIT_DEFAULT any more.

This patch sets the default initialization scheme to use
ALC_INIT_DEFAULT when no valid bits are set for SKU assid.

Reference:
https://bugzilla.redhat.com/show_bug.cgi?id=657388

Reported-and-tested-by: Kyle McMartin <kyle@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoperf: Fix the software context switch counter
Peter Zijlstra [Fri, 26 Nov 2010 12:49:04 +0000 (13:49 +0100)]
perf: Fix the software context switch counter

Stephane noticed that because the perf_sw_event() call is inside the
perf_event_task_sched_out() call it won't get called unless we
have a per-task counter.

Reported-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoperf, x86: Fixup Kconfig deps
Peter Zijlstra [Tue, 16 Nov 2010 20:49:01 +0000 (21:49 +0100)]
perf, x86: Fixup Kconfig deps

This leads to a Kconfig dep inversion, x86 selects PERF_EVENT (due to
a hw_breakpoint dep) but doesn't unconditionally provide
HAVE_PERF_EVENT.

(This can cause build failures on M386/M486 kernel .config's.)

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20101117222055.982965150@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agox86, perf, nmi: Disable perf if counters are not accessible
Don Zickus [Mon, 22 Nov 2010 21:55:23 +0000 (16:55 -0500)]
x86, perf, nmi: Disable perf if counters are not accessible

In a kvm virt guests, the perf counters are not emulated.  Instead they
return zero on a rdmsrl. The perf nmi handler uses the fact that crossing
a zero means the counter overflowed (for those counters that do not have
specific interrupt bits). Therefore on kvm guests, perf will swallow all
NMIs thinking the counters overflowed.

This causes problems for subsystems like kgdb which needs NMIs to do its
magic. This problem was discovered by running kgdb tests.

The solution is to write garbage into a perf counter during the
initialization and hopefully reading back the same number.  On kvm
guests, the value will be read back as zero and we disable perf as
a result.

Reported-by: Jason Wessel <jason.wessel@windriver.com>
Patch-inspired-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <1290462923-30734-1-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoperf: Fix inherit vs. context rotation bug
Thomas Gleixner [Wed, 24 Nov 2010 09:05:55 +0000 (10:05 +0100)]
perf: Fix inherit vs. context rotation bug

It was found that sometimes children of tasks with inherited events had
one extra event. Eventually it turned out to be due to the list rotation
no being exclusive with the list iteration in the inheritance code.

Cure this by temporarily disabling the rotation while we inherit the events.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoMerge branch 'ftrace' of git://github.com/rabinv/linux-2.6 into devel-stable
Russell King [Fri, 26 Nov 2010 10:28:11 +0000 (10:28 +0000)]
Merge branch 'ftrace' of git://github.com/rabinv/linux-2.6 into devel-stable

13 years agoMerge branch 'perf-split' of git://linux-arm.org/linux-2.6-wd into devel-stable
Russell King [Fri, 26 Nov 2010 10:26:43 +0000 (10:26 +0000)]
Merge branch 'perf-split' of git://linux-arm.org/linux-2.6-wd into devel-stable

13 years agoMerge branch 'for-russell' of git://codeaurora.org/quic/kernel/dwalker/linux-msm...
Russell King [Fri, 26 Nov 2010 10:26:10 +0000 (10:26 +0000)]
Merge branch 'for-russell' of git://codeaurora.org/quic/kernel/dwalker/linux-msm into devel-stable

13 years agodmar, x86: Use function stubs when CONFIG_INTR_REMAP is disabled
Randy Dunlap [Mon, 22 Nov 2010 20:48:34 +0000 (12:48 -0800)]
dmar, x86: Use function stubs when CONFIG_INTR_REMAP is disabled

The stubs for CONFIG_INTR_REMAP disabled need to be functions
instead of values to eliminate build warnings.

 arch/x86/kernel/apic/apic.c: In function 'lapic_suspend':
 arch/x86/kernel/apic/apic.c:2060:3: warning: statement with no effect
 arch/x86/kernel/apic/apic.c: In function 'lapic_resume':
 arch/x86/kernel/apic/apic.c:2137:3: warning: statement with no effect

Reported-and-Tested-by: Fabio Comolli <fabio.comolli@gmail.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
LKML-Reference: <20101122124834.74429004.randy.dunlap@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoASoC: Fix resource reclaim for osk5912
Axel Lin [Wed, 24 Nov 2010 14:24:01 +0000 (22:24 +0800)]
ASoC: Fix resource reclaim for osk5912

In current implementation, there are resources leak in the error path.
This patch properly reclaims the allocated resources in the error path.

Also adds a missing clk_put in osk_soc_exit.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: tlv320aic3x - fix variable may be used uninitialized warning
Axel Lin [Wed, 24 Nov 2010 14:40:59 +0000 (22:40 +0800)]
ASoC: tlv320aic3x - fix variable may be used uninitialized warning

If aic3x_read failed , val is used uninitialized.
Fix it by initializing val to 0.

This patch fixes below compile warning:
sound/soc/codecs/tlv320aic3x.c: In function 'aic3x_get_gpio':
sound/soc/codecs/tlv320aic3x.c:1183: warning: 'val' may be used uninitialized in this function
sound/soc/codecs/tlv320aic3x.c: In function 'aic3x_headset_detected':
sound/soc/codecs/tlv320aic3x.c:1211: warning: 'val' may be used uninitialized in this function
sound/soc/codecs/tlv320aic3x.c: In function 'aic3x_button_pressed':
sound/soc/codecs/tlv320aic3x.c:1219: warning: 'val' may be used uninitialized in this function

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoARM: perf: separate PMU backends into multiple files
Will Deacon [Sat, 13 Nov 2010 19:04:32 +0000 (19:04 +0000)]
ARM: perf: separate PMU backends into multiple files

The ARM perf_event.c file contains all PMU backends and, as new PMUs
are introduced, will continue to grow.

This patch follows the example of x86 and splits the PMU implementations
into separate files which are then #included back into the main
file. Compile-time guards are added to each PMU file to avoid compiling
in code that is not relevant for the version of the architecture which
we are targetting.

Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: perf: encode PMU name in arm_pmu structure
Will Deacon [Sat, 13 Nov 2010 18:45:27 +0000 (18:45 +0000)]
ARM: perf: encode PMU name in arm_pmu structure

Currently, perf uses the PMU ID as an index into a string table
to look up the name of a given PMU.

This patch encodes the name of a PMU directly into the arm_pmu
structure so that PMU-specific code can be factored out into
separate files.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: perf: add _init() functions to PMUs
Will Deacon [Sat, 13 Nov 2010 17:37:46 +0000 (17:37 +0000)]
ARM: perf: add _init() functions to PMUs

In preparation for separating the PMU-specific code, this patch adds
self-contained init functions to each PMU, therefore removing any
PMU-specific knowledge from the PMU-agnostic init_hw_perf_events
function.

Acked-by: Jamie Iles <jamie@jamieiles.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: perf: avoid exposing internal stop function for v6 PMU
Will Deacon [Sat, 13 Nov 2010 17:18:36 +0000 (17:18 +0000)]
ARM: perf: avoid exposing internal stop function for v6 PMU

Unlike other pmu functions, armv6pmu_pmu_stop is not declared static.
This patch adds the missing keyword.

Acked-by: Jamie Iles <jamie.iles@jamieiles.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoARM: perf: consolidate common PMU behaviour
Will Deacon [Sat, 13 Nov 2010 17:13:56 +0000 (17:13 +0000)]
ARM: perf: consolidate common PMU behaviour

The functions for mapping PMU events (perf, cache and raw) are
common between all PMU types and differ only in the data on which
they operate.

This patch implements common definitions of these mapping functions
and changes the arm_pmu struct to hold pointers to the data which
they require. This is in anticipation of separating out the PMU-specific
code into separate files.

Acked-by: Jamie Iles <jamie.iles@jamieiles.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
13 years agoEDAC: Fix typos in Documentation/edac.txt
Raoul Bhatia [Thu, 25 Nov 2010 16:32:47 +0000 (17:32 +0100)]
EDAC: Fix typos in Documentation/edac.txt

Fix trivial typos in edac.txt

Signed-off-by: Raoul Bhatia <r.bhatia@ipax.at>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
13 years agoASoC: davinci-vcif - fix a memory leak
Axel Lin [Thu, 25 Nov 2010 03:33:14 +0000 (11:33 +0800)]
ASoC: davinci-vcif - fix a memory leak

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: phycore-ac97: fix resource leak
Axel Lin [Thu, 25 Nov 2010 07:14:03 +0000 (15:14 +0800)]
ASoC: phycore-ac97: fix resource leak

Fix imx_phycore_init() error path and imx_phycore_exit() to properly free
allocated resources.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: imx-ssi: fix resource leak
Axel Lin [Thu, 25 Nov 2010 07:13:09 +0000 (15:13 +0800)]
ASoC: imx-ssi: fix resource leak

Fix imx_ssi_probe() error path and imx_ssi_remove() to properly free
allocated resources.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: simone: fix resource leak in simone_init error path
Axel Lin [Thu, 25 Nov 2010 07:12:30 +0000 (15:12 +0800)]
ASoC: simone: fix resource leak in simone_init error path

Fix the error path to properly free allocated resources.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@iki.fi>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: sam9g20_wm8731: fix resource leak in at91sam9g20ek_init error path
Axel Lin [Thu, 25 Nov 2010 07:11:03 +0000 (15:11 +0800)]
ASoC: sam9g20_wm8731: fix resource leak in at91sam9g20ek_init error path

Fix the error path to properly free allocated resources.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: snd-soc-afeb9260: remove unneeded platform_device_del in error path
Axel Lin [Thu, 25 Nov 2010 02:44:59 +0000 (10:44 +0800)]
ASoC: snd-soc-afeb9260: remove unneeded platform_device_del in error path

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: pcm030-audio-fabric: fix resource leak in pcm030_fabric_init error path
Axel Lin [Thu, 25 Nov 2010 07:08:31 +0000 (15:08 +0800)]
ASoC: pcm030-audio-fabric: fix resource leak in pcm030_fabric_init error path

Add missing platform_device_put() if platform_device_add() failed.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: efika-audio-fabric: fix resource leak in efika_fabric_init error path
Axel Lin [Thu, 25 Nov 2010 07:07:25 +0000 (15:07 +0800)]
ASoC: efika-audio-fabric: fix resource leak in efika_fabric_init error path

Add missing platform_device_put() if platform_device_add() failed.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: Call snd_soc_unregister_dais instead of snd_soc_unregister_dai in sh4_soc_dai_r...
Axel Lin [Thu, 25 Nov 2010 09:23:55 +0000 (17:23 +0800)]
ASoC: Call snd_soc_unregister_dais instead of snd_soc_unregister_dai in sh4_soc_dai_remove

We call snd_soc_register_dais() in sh4_soc_dai_probe(),
thus we should call snd_soc_unregister_dais() in sh4_soc_dai_remove().

Otherwise, we got "too many arguments to function 'snd_soc_unregister_dai'"
error message.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agoASoC: fix SND_PXA2XX_LIB Kconfig warning
Dmitry Artamonow [Wed, 24 Nov 2010 21:46:15 +0000 (00:46 +0300)]
ASoC: fix SND_PXA2XX_LIB Kconfig warning

Fix following warning observed when SND_PXA2XX_SOC is set and SND_ARM isn't:

warning: (SND_PXA2XX_AC97 && SOUND && !M68K && SND && SND_ARM && ARCH_PXA ||
SND_PXA2XX_SOC && SOUND && !M68K && SND && SND_SOC && ARCH_PXA) selects
SND_PXA2XX_LIB which has unmet direct dependencies (SOUND && !M68K && SND &&
SND_ARM)

Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
13 years agovhost/net: fix rcu check usage
Michael S. Tsirkin [Sun, 14 Nov 2010 15:31:52 +0000 (17:31 +0200)]
vhost/net: fix rcu check usage

Incorrect rcu check was used as rcu isn't done
under mutex here. Force check to 1 for now,
to stop it from complaining.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
13 years ago[S390] qdio: free indicator after reset is finished
Jan Glauber [Thu, 25 Nov 2010 08:52:46 +0000 (09:52 +0100)]
[S390] qdio: free indicator after reset is finished

The qdio device indicator is freed before the device is notified that
the indicator is reset. This sequence contains a race when the freed
indicator is used by a new device while the reset of the indicator is
still pending. Do the reset operation before freeing the indicator to
avoid that potential race.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years ago[S390] nmi: fix clock comparator revalidation
Heiko Carstens [Thu, 25 Nov 2010 08:52:45 +0000 (09:52 +0100)]
[S390] nmi: fix clock comparator revalidation

On each machine check all registers are revalidated. The save area for
the clock comparator however only contains the upper most seven bytes
of the former contents, if valid.
Therefore the machine check handler uses a store clock instruction to
get the current time and writes that to the clock comparator register
which in turn will generate an immediate timer interrupt.
However within the lowcore the expected time of the next timer
interrupt is stored. If the interrupt happens before that time the
handler won't be called. In turn the clock comparator won't be
reprogrammed and therefore the interrupt condition stays pending which
causes an interrupt loop until the expected time is reached.

On NOHZ machines this can result in unresponsive machines since the
time of the next expected interrupted can be a couple of days in the
future.

To fix this just revalidate the clock comparator register with the
expected value.
In addition the special handling for udelay must be changed as well.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
13 years agoALSA: hda - Fix ALC660-VD/ALC861-VD capture/playback mixers
Herton Ronaldo Krzesinski [Thu, 25 Nov 2010 02:08:01 +0000 (00:08 -0200)]
ALSA: hda - Fix ALC660-VD/ALC861-VD capture/playback mixers

The mixer nids passed to alc_auto_create_input_ctls are wrong: 0x15 is
a pin, and 0x09 is the ADC on both ALC660-VD/ALC861-VD. Thus with
current code, input playback volume/switches and input source mixer
controls are not created, and recording doesn't work. Select correct
mixers, 0x0b (input playback mixer) and 0x22 (capture source mixer).

Reference: https://qa.mandriva.com/show_bug.cgi?id=61159

Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>